tomcat 異常 HTTP method names must be tokens

 java.lang.IllegalArgumentException: Invalid character found in method name. HTTP method names must be tokens
    at org.apache.coyote.http11.Http11InputBuffer.parseRequestLine(Http11InputBuffer.java:417)
    at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:667)
    at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
    at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:789)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1437)
    at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    at java.lang.Thread.run(Thread.java:745)
           

原因：

部署項目中傳回頭部資訊過大造成的。tomcat8 給的預設值滿足不了我傳回頭部的長度，給适當的長度就可以了

解決方法：

需要在tomcat的server.xml中配置：

maxHttpHeaderSize="8192"   
           

上面這行配置在這裡：

<Connector port="8080" protocol="HTTP/1.1"  maxHttpHeaderSize="8192" 
               connectionTimeout="30000"   maxThreads="200"   maxSpareThreads="100"  
               redirectPort="443" URIEncoding="UTF-8" />